New K-series DSLR under development to be exhibited

**ThorSanchez** · 11-08-2019, 11:58 AM

Originally posted by abraxas

Don't most cameras have that functionality? Why would you need such a blow-function then?

Most cameras don't have in-body shake reduction.

abraxas · 11-08-2019, 12:12 PM

Originally posted by ThorSanchez

Most cameras don't have in-body shake reduction.

I.e. that ability is coupled to having IBIS? How do other cameras clean the sensor then (or do they rely on the user for that)?

**ThorSanchez** · 11-08-2019, 12:20 PM

Originally posted by abraxas

I.e. that ability is coupled to having IBIS? How do other cameras clean the sensor then (or do they rely on the user for that)?

Yes, the same servos or solenoids or whatever that IBIS uses can rapidly vibrate the sensor to shake the dust off. I assume that cameras without IBIS don't automatically clean the sensor. You'd have to use a rocket blower or swabs.

Kunzite · 11-08-2019, 12:36 PM - **1 Like**

Originally posted by ThorSanchez

Yes, the same servos or solenoids or whatever that IBIS uses can rapidly vibrate the sensor to shake the dust off. I assume that cameras without IBIS don't automatically clean the sensor. You'd have to use a rocket blower or swabs.

What you're describing is the first version of Pentax' Dust Reduction system - which indeed is using the SR system to drive the sensor into a hard stop, to dislodge dust.
It isn't the most efficient, and it isn't the only option; the usual system has piezo elements shaking at a very high speed a protective glass (available before Pentax' SR-based system). This is why you don't feel the DR system working on your K-3 II; yes, Pentax is also using the piezo elements system for their upper level cameras.

Currently only the K-70 is using the SR-based system.

**ThorSanchez** · 11-08-2019, 01:04 PM

Originally posted by Kunzite

What you're describing is the first version of Pentax' Dust Reduction system - which indeed is using the SR system to drive the sensor into a hard stop, to dislodge dust.
It isn't the most efficient, and it isn't the only option; the usual system has piezo elements shaking at a very high speed a protective glass (available before Pentax' SR-based system). This is why you don't feel the DR system working on your K-3 II; yes, Pentax is also using the piezo elements system for their upper level cameras.

Currently only the K-70 is using the SR-based system.

Huh. I didn't know that. And come to think of it, my K-30 has a perceptible vibration at shut-down, while the K-3ii doesn't.

The Squirrel Mafia · 11-08-2019, 01:11 PM

Funny thing is that my niece's Nikon D5200 has a sensor cleaning mode. I don't even know how that works. Some kind of electrical charge? Who knows, but it definitely doesn't have IBIS. Same with the D7200.

**ThorSanchez** · 11-08-2019, 01:15 PM - **7 Likes**

Originally posted by The Squirrel Mafia

Funny thing is that my niece's Nikon D5200 has a sensor cleaning mode. I don't even know how that works. Some kind of electrical charge? Who knows, but it definitely doesn't have IBIS. Same with the D7200.

Tiny trained monkeys, with squeegees.

reh321 · 11-08-2019, 01:18 PM

Originally posted by ThorSanchez

Huh. I didn't know that. And come to think of it, my K-30 has a perceptible vibration at shut-down, while the K-3ii doesn't.

Both my K-30 and my KP have "on" and "off" cleaning available, but they are menu-selectable, so you would have to be sure that the K-3ii has "off" selected before you make the comparison. The K-30 cleaning does feel different from the cleaning available on the KP, though.

The Squirrel Mafia · 11-08-2019, 01:21 PM - **1 Like**

Originally posted by ThorSanchez

Tiny trained monkeys, with squeegees.

Hahaha!

ecostigny · 11-08-2019, 02:38 PM - **1 Like**

From what I can gather, cameras that don't have IBIS can still use a piezo crystal ultrasonic vibration system to shake dust particles off the sensor. The frequency is higher and the amount of motion involved is considerably less, but the goal is the same: keep pixels from being blocked by dust particles.

The tiny trained monkeys with squeegees approach must be proprietary to Nikon.

photoptimist · 11-08-2019, 03:02 PM - **3 Likes**

Originally posted by ThorSanchez

Tiny trained monkeys, with squeegees.

So it's DPR reviewers, eh? No, wait, you said "trained" so it's not them.

**mlt** · 11-08-2019, 03:06 PM - **2 Likes**

As opposed to the other system that trains their tiny monkeys to just blow hard on the sensor, soon to be outsourced to one trapped in a lens

**TwoUptons** · 11-08-2019, 04:42 PM

Originally posted by The Squirrel Mafia

Funny thing is that my niece's Nikon D5200 has a sensor cleaning mode. I don't even know how that works. Some kind of electrical charge? Who knows, but it definitely doesn't have IBIS. Same with the D7200.

For some cameras, sensor cleaning mode flips up the mirror and opens the shutter so you can clean the sensor yourself.

Pentax cameras also do this, but in addition to the self-cleaning.

-Eric

abraxas · 11-08-2019, 04:46 PM - **1 Like**

Originally posted by mlt

As opposed to the other system that trains their tiny monkeys to just blow hard on the sensor, soon to be outsourced to one trapped in a lens

Running in a hamster wheel, for driving the fan?

yorik · 11-09-2019, 09:31 AM - **2 Likes**

Now we know what the unlabeled button does - it releases the nano-monkeys from their cage to clean the sensor (and sweep up any errant pixie dust).

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11-08-2019, 11:58 AM	#3421
ThorSanchez Site Supporter Join Date: Dec 2012 Photos: Gallery \| Albums Posts: 2,806	Originally posted by abraxas Don't most cameras have that functionality? Why would you need such a blow-function then? Most cameras don't have in-body shake reduction.

11-08-2019, 12:12 PM	#3422
abraxas Junior Member Join Date: Jul 2018 Posts: 33	Originally posted by ThorSanchez Most cameras don't have in-body shake reduction. I.e. that ability is coupled to having IBIS? How do other cameras clean the sensor then (or do they rely on the user for that)?

11-08-2019, 12:20 PM	#3423
ThorSanchez Site Supporter Join Date: Dec 2012 Photos: Gallery \| Albums Posts: 2,806	Originally posted by abraxas I.e. that ability is coupled to having IBIS? How do other cameras clean the sensor then (or do they rely on the user for that)? Yes, the same servos or solenoids or whatever that IBIS uses can rapidly vibrate the sensor to shake the dust off. I assume that cameras without IBIS don't automatically clean the sensor. You'd have to use a rocket blower or swabs.

11-08-2019, 12:36 PM - 1 Like	#3424
Kunzite Pentaxian Join Date: Apr 2007 Location: Romania Posts: 15,132	Originally posted by ThorSanchez Yes, the same servos or solenoids or whatever that IBIS uses can rapidly vibrate the sensor to shake the dust off. I assume that cameras without IBIS don't automatically clean the sensor. You'd have to use a rocket blower or swabs. What you're describing is the first version of Pentax' Dust Reduction system - which indeed is using the SR system to drive the sensor into a hard stop, to dislodge dust. It isn't the most efficient, and it isn't the only option; the usual system has piezo elements shaking at a very high speed a protective glass (available before Pentax' SR-based system). This is why you don't feel the DR system working on your K-3 II; yes, Pentax is also using the piezo elements system for their upper level cameras. Currently only the K-70 is using the SR-based system.

11-08-2019, 01:04 PM	#3425
ThorSanchez Site Supporter Join Date: Dec 2012 Photos: Gallery \| Albums Posts: 2,806	Originally posted by Kunzite What you're describing is the first version of Pentax' Dust Reduction system - which indeed is using the SR system to drive the sensor into a hard stop, to dislodge dust. It isn't the most efficient, and it isn't the only option; the usual system has piezo elements shaking at a very high speed a protective glass (available before Pentax' SR-based system). This is why you don't feel the DR system working on your K-3 II; yes, Pentax is also using the piezo elements system for their upper level cameras. Currently only the K-70 is using the SR-based system. Huh. I didn't know that. And come to think of it, my K-30 has a perceptible vibration at shut-down, while the K-3ii doesn't.

11-08-2019, 01:11 PM	#3426
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,054	Funny thing is that my niece's Nikon D5200 has a sensor cleaning mode. I don't even know how that works. Some kind of electrical charge? Who knows, but it definitely doesn't have IBIS. Same with the D7200.

11-08-2019, 01:15 PM - 7 Likes	#3427
ThorSanchez Site Supporter Join Date: Dec 2012 Photos: Gallery \| Albums Posts: 2,806	Originally posted by The Squirrel Mafia Funny thing is that my niece's Nikon D5200 has a sensor cleaning mode. I don't even know how that works. Some kind of electrical charge? Who knows, but it definitely doesn't have IBIS. Same with the D7200. Tiny trained monkeys, with squeegees.

11-08-2019, 01:18 PM	#3428
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 23,179	Originally posted by ThorSanchez Huh. I didn't know that. And come to think of it, my K-30 has a perceptible vibration at shut-down, while the K-3ii doesn't. Both my K-30 and my KP have "on" and "off" cleaning available, but they are menu-selectable, so you would have to be sure that the K-3ii has "off" selected before you make the comparison. The K-30 cleaning does feel different from the cleaning available on the KP, though.

11-08-2019, 01:21 PM - 1 Like	#3429
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,054	Originally posted by ThorSanchez Tiny trained monkeys, with squeegees. Hahaha!

11-08-2019, 02:38 PM - 1 Like	#3430
ecostigny Pentaxian Join Date: Nov 2017 Location: Branford, CT Posts: 561	From what I can gather, cameras that don't have IBIS can still use a piezo crystal ultrasonic vibration system to shake dust particles off the sensor. The frequency is higher and the amount of motion involved is considerably less, but the goal is the same: keep pixels from being blocked by dust particles. The tiny trained monkeys with squeegees approach must be proprietary to Nikon.

11-08-2019, 03:02 PM - 3 Likes	#3431
photoptimist Pentaxian Join Date: Jul 2016 Photos: Albums Posts: 5,123	Originally posted by ThorSanchez Tiny trained monkeys, with squeegees. So it's DPR reviewers, eh? No, wait, you said "trained" so it's not them.

11-08-2019, 03:06 PM - 2 Likes	#3432
mlt Site Supporter Join Date: Dec 2007 Posts: 1,159	As opposed to the other system that trains their tiny monkeys to just blow hard on the sensor, soon to be outsourced to one trapped in a lens

11-08-2019, 04:42 PM	#3433
TwoUptons Loyal Site Supporter Join Date: Nov 2015 Photos: Albums Posts: 4,214	Originally posted by The Squirrel Mafia Funny thing is that my niece's Nikon D5200 has a sensor cleaning mode. I don't even know how that works. Some kind of electrical charge? Who knows, but it definitely doesn't have IBIS. Same with the D7200. For some cameras, sensor cleaning mode flips up the mirror and opens the shutter so you can clean the sensor yourself. Pentax cameras also do this, but in addition to the self-cleaning. -Eric

11-08-2019, 04:46 PM - 1 Like	#3434
abraxas Junior Member Join Date: Jul 2018 Posts: 33	Originally posted by mlt As opposed to the other system that trains their tiny monkeys to just blow hard on the sensor, soon to be outsourced to one trapped in a lens Running in a hamster wheel, for driving the fan?

11-09-2019, 09:31 AM - 2 Likes	#3435
yorik Veteran Member Join Date: Jan 2012 Location: Scotts Valley, CA Photos: Gallery Posts: 991	Now we know what the unlabeled button does - it releases the nano-monkeys from their cage to clean the sensor (and sweep up any errant pixie dust).